Arrhythmia is a condition where the heart beats irregularly, either too fast, too slow, or with an irregular rhythm. This can disrupt the effective pumping of blood to the body, leading to symptoms like dizziness, shortness of breath, and chest pain. Various factors, such as heart disease, electrolyte imbalances, or certain medications, can cause arrhythmias. Treatment depends on the type and severity of the arrhythmia and may include medication, lifestyle changes, or medical procedures to restore a normal heart rhythm.